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Old 08-12-2012, 05:38 PM #1
Join Date: Feb 2012
Chevy silverado 1500 2003 single cab

Please before anyone gripes about turning a truck into a performance car/drag truck this is not my intention, I am looking to change my 4.3 liter v6 and upgrade to either a 350 or a 383 stroker. Now what I am really needing to know is that can I use my stock 5 speed manual transmission with either of those I'm willing to get a new one if the price is right. Again I am looking for an everyday truck until my freshman/sophomore year in college ill be graduating this upcoming summer or perhaps longer, so please help me if you can thanks
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Old 08-12-2012, 06:07 PM #2
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383 in a truck sounds like no traction+tree=badtime.
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Old 08-12-2012, 06:07 PM #3
Join Date: Aug 2012
what type of transmission is it? that's the most important piece of information should say what model it is in your owner's manual.
use this link if you need help finding out your gearbox model. if you have any transmission/clutch problems currently, that may immediately disqualify it from being bolted on a higher-torque V8. if these problems exist, they should be taken care of before you do an engine swap. a junkyard gearbox may also be a good option for you. i'd recommend joining a silverado forum, where they will have many more members in this area of expertise.
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Old 08-12-2012, 06:09 PM #4
Join Date: Aug 2012
F1VENOM has a point, as well...a 350 is a FANTASTIC truck motor. my Suburban has a 350 with 1250k on it...and it purrs like a kitten. your truck may be a little light in the @$$ to have a stroker in there.
EDIT: 250k*
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Old 08-12-2012, 06:17 PM #5
Join Date: Feb 2012
I'd have to agree I'd love to have the 383 but it doesn't seem practical you k ow your only young and dumb for a little while before it gets old, I'll look into the gearbox numbers aswell I bought my truck used so the owners manuals weren't included in the purchase it was a farm truck so I'm
Lucky it has airbags anymore, I'll ask my old man he'd know or even my uncle if I can't find it myself
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Old 08-12-2012, 07:12 PM #6
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Sell it and buy a 4.8 or 5.3 powered truck. The LS motor is way better than the SBC. Your 5 speed wont hold a V8, or they would have offered it with the V8. It might work, but not for long.
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Old 08-14-2012, 09:34 PM #7
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It's a whole lot of work to go back to the SBC from that style of motor. Think about all the electronic differences. The 5 speed will work, but it won't like you. Try find a 5.3 or 6.0 liter if you want to throw a V8 in it.
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Old 08-14-2012, 10:18 PM #8
Gig 'em
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Also you won't pass inspection if you go from EFI to a carb'd engine. (Unless its a non-inspection state)
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